/*
 * Copyright (C) 2016 Facishare Technology Co., Ltd. All Rights Reserved.
 */
package remix.myplayer.misc.floatpermission.rom;

import android.annotation.TargetApi;
import android.app.AppOpsManager;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.os.Binder;
import android.os.Build;
import android.util.Log;
import java.lang.reflect.Method;

public class QikuUtils {

  private static final String TAG = "QikuUtils";

  /**
   * 检测 360 悬浮窗权限
   */
  public static boolean checkFloatWindowPermission(Context context) {
    final int version = Build.VERSION.SDK_INT;
    if (version >= 19) {
      return checkOp(context, 24); //OP_SYSTEM_ALERT_WINDOW = 24;
    }
    return true;
  }

  @TargetApi(Build.VERSION_CODES.KITKAT)
  private static boolean checkOp(Context context, int op) {
    final int version = Build.VERSION.SDK_INT;
    if (version >= 19) {
      AppOpsManager manager = (AppOpsManager) context.getSystemService(Context.APP_OPS_SERVICE);
      try {
        Class clazz = AppOpsManager.class;
        Method method = clazz.getDeclaredMethod("checkOp", int.class, int.class, String.class);
        return AppOpsManager.MODE_ALLOWED == (int) method
            .invoke(manager, op, Binder.getCallingUid(), context.getPackageName());
      } catch (Exception e) {
        Log.e(TAG, Log.getStackTraceString(e));
      }
    } else {
      Log.e("", "Below API 19 cannot invoke!");
    }
    return false;
  }

  /**
   * 去360权限申请页面
   */
  public static void applyPermission(Context context) {
    Intent intent = new Intent();
    intent.setClassName("com.android.settings",
        "com.android.settings.Settings$OverlaySettingsActivity");
    intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    if (isIntentAvailable(intent, context)) {
      context.startActivity(intent);
    } else {
      intent.setClassName("com.qihoo360.mobilesafe",
          "com.qihoo360.mobilesafe.ui.index.AppEnterActivity");
      if (isIntentAvailable(intent, context)) {
        context.startActivity(intent);
      } else {
        Log.e(TAG, "can't open permission page with particular name, please use " +
            "\"adb shell dumpsys activity\" command and tell me the name of the float window permission page");
      }
    }
  }

  private static boolean isIntentAvailable(Intent intent, Context context) {
    if (intent == null) {
      return false;
    }
    return
        context.getPackageManager().queryIntentActivities(intent, PackageManager.MATCH_DEFAULT_ONLY)
            .size() > 0;
  }
}
